A simple helpdesk tickets system for Laravel 5.1+ which integrates smoothly with Laravel default users and auth system, demo is available at: http://ticketit.kordy.info/tickets

TicketDesk - A simple and effective Issue Tracker for Help Desks

Modern, Streamlined, Free and Open Source Customer Service Software

Zammad is a web based open source helpdesk/customer support system

UVdesk Opensource Community Helpdesk Project built for all to make a Full Ticketing Support System along with many more other features.

基于django的工作流引擎,工单(a workflow engine base on django python)

third loonflow